Question 1

Which element is associated with the term "galvanized"?

Accepted Answer

A)  Ga
B)  Zn
C)  Cd
D)  Hg
E)  PbF) D) and E)
G) A) and C)

Question 2

Gold can be electrochemically "plated" onto a less expensive metal by submerging the object in a solution of gold(III)and applying an electric current to drive the following half-reaction:
Au3+ + 3e- $\to$  Au(s)
How many grams of gold will be formed if a current of 2.37 A is applied for 71 minutes?

Accepted Answer

The answer of Gold can be electrochemically "plated" onto a...

Question 3

Complete and balance the following redox reaction under basic conditions:
PO33-(aq)+ MnO4-(aq)$\to$  PO43-(aq)+ MnO2(s)

Accepted Answer

3PO₃^3-(a...

Question 4

Consider the reaction Hg2+(aq) + Hg(l)  2+(aq) + Hg(l)    Hg22+(aq) . Find the equilibrium constant for this reaction at 25°C. A) 2  	imes  101 B) 6  	imes  1059 C) 4  	imes  10-3 D) 7  	imes  10-2 E) 2  	imes  102 " class="answers-bank-image d-inline" rel="preload" > Hg22+(aq) . Find the equilibrium constant for this reaction at 25°C.

Accepted Answer

A)  2  ×	imes×  101
B)  6  ×	imes×  1059
C)  4  ×	imes×  10-3
D)  7  ×	imes×  10-2
E)  2  ×	imes×  102 F) A) and D)
G) A) and E)

Question 5

Find the emf of the cell described by the cell diagram Fe | Fe2+ (1.500M) || Au3+ (0.00400M) | Au

Accepted Answer

A)  1.99 V
B)  1.89 V
C)  1.94 V
D)  1.66 V
E)  1.91 VF) A) and D)
G) A) and C)

Question 6

Aluminum metal is formed by the electrolysis of Al2O3 in molten cryolite. How many minutes are required to form 10.0 g of Al using a current of 30 A?

Accepted Answer

Question 7

Which of these metals will not reduce water to hydrogen in basic solution under standard conditions?

Accepted Answer

A)  Cd
B)  Sr
C)  Mg
D)  Ba
E)  KF) All of the above
G) A) and E)

Question 8

Aluminum metal is formed by the electrolysis of Al2O3 in molten cryolite. How many grams of Al are produced when 6.50 $\times$ 103 C pass through the cell?

Accepted Answer

The answer of Aluminum metal is formed by the electrolysis...

Question 9

Which statement is true for a spontaneous redox reaction carried out at standard-state conditions?

Accepted Answer

A)  E°red is always negative.
B)  E°cell is always positive.
C)  E°ox is always positive.
D)  E°red is always positive.E) B) and D)
F) A) and B)

Question 10

Consider the reaction Fe + Sn2+(1 $\times$ 10-3 M)$\to$ Fe2+(1.0 M)+ Sn. Sketch a diagram of such a cell. Be sure to label the anode and cathode, and show the direction of electron flow in the external circuit. Write the half-reactions occurring at the electrodes.

Accepted Answer

Fe | Fe²⁺(1.0 M)|| ...

Question 11

Will H2(g)form when Ag is placed in 1.0 M HCl?

Accepted Answer

Question 12

Iron objects such as storage tanks and underground pipelines can be protected from corrosion by connecting them through a wire to a piece of

Accepted Answer

A)  Pb
B)  Ag
C)  Sn
D)  Mg
E)  CuF) B) and D)
G) A) and D)

Question 13

Complete and balance the following redox equation using the set of smallest whole-numbers coefficients. What is the sum of the coefficients? HI + HNO3  →	o→  I2 + NO (acidic solution)

Accepted Answer

A)  5
B)  7
C)  14
D)  17
E)  None of these. F) None of the above
G) A) and E)

Question 14

Calculate the cell emf for the following reaction: Cu2+(0.10 M) + H2(1 atm)  →	o→  Cu(s) + 2H+(pH = 3.00)

Accepted Answer

A)  0.49 V
B)  0.19 V
C)  0.15 V
D)  0.40 V
E)  -0.34 V F) None of the above
G) C) and D)

Question 15

Which of these metals will be oxidized in hydrochloric acid under standard conditions at 25°C?

Accepted Answer

A)  Ag
B)  Au
C)  Hg
D)  Cu
E)  ZnF) C) and D)
G) B) and C)

Question 16

In the following half equation, which is the oxidizing agent? NO3-(aq) + 4H+(aq) + 3e-  →	o→  NO(g) + 2H2O

Accepted Answer

A)  NO3-
B)  H+
C)  e-
D)  NO
E)  H2O F) A) and D)
G) A) and B)

Question 17

Many different ways have been proposed to make batteries.One cell is set up with copper and lead electrodes in contact with CuSO4(aq)and Pb(NO3)2 (aq), respectively.If the Pb2+ and Cu2+ concentrations are each 1.0 M, what is the overall cell potential?

Accepted Answer

Question 18

Consider the reaction 2Fe3+(aq) + Fe(s)  3+(aq) + Fe(s)     3Fe2+(aq) . Find the equilibrium constant for this reaction at 25°C. A) 1  	imes  1011 B) 8  	imes  1040 C) 3  	imes  1020 D) 7  	imes  10-12 E) 1  	imes  10-41 " class="answers-bank-image d-inline" rel="preload" >  3Fe2+(aq) . Find the equilibrium constant for this reaction at 25°C.

Accepted Answer

A)  1  ×	imes×  1011
B)  8  ×	imes×  1040
C)  3  ×	imes×  1020
D)  7  ×	imes×  10-12
E)  1  ×	imes×  10-41 F) B) and E)
G) A) and E)

Exam 19: Electrochemistry

Which element is associated with the term "galvanized"?

Correct Answer
verified

Find the emf of the cell described by the cell diagram Fe | Fe²⁺ (1.500M) || Au³⁺ (0.00400M) | Au

Correct Answer
verified

In the following half equation, which is the oxidizing agent? NO₃^-(aq) + 4H⁺(aq) + 3e^- $\to$ NO(g) + 2H₂O

Correct Answer
verified

Consider the reaction Fe + Sn²⁺(1 $\times$ 10^-3 M) $\to$ Fe²⁺(1.0 M)+ Sn. Sketch a diagram of such a cell. Be sure to label the anode and cathode, and show the direction of electron flow in the external circuit. Write the half-reactions occurring at the electrodes.

Correct Answer
verified
Fe | Fe²⁺(1.0 M)|| ...
View Answer

Which statement is true for a spontaneous redox reaction carried out at standard-state conditions?

Correct Answer
verified

Iron objects such as storage tanks and underground pipelines can be protected from corrosion by connecting them through a wire to a piece of

Correct Answer
verified

Which of these metals will be oxidized in hydrochloric acid under standard conditions at 25°C?

Correct Answer
verified

Complete and balance the following redox equation using the set of smallest whole-numbers coefficients. What is the sum of the coefficients? HI + HNO₃ $\to$ I₂ + NO (acidic solution)

Correct Answer
verified

Aluminum metal is formed by the electrolysis of Al₂O₃in molten cryolite. How many minutes are required to form 10.0 g of Al using a current of 30 A?

Correct Answer
verified

Correct Answer
verified

Will H₂(g)form when Ag is placed in 1.0 M HCl?

Correct Answer
verified

Which of these metals will not reduce water to hydrogen in basic solution under standard conditions?

Correct Answer
verified

Aluminum metal is formed by the electrolysis of Al₂O₃in molten cryolite. How many grams of Al are produced when 6.50 $\times$ 10³ C pass through the cell?

Correct Answer
verified

Calculate the cell emf for the following reaction: Cu²⁺(0.10 M) + H₂(1 atm) $\to$ Cu(s) + 2H⁺(pH = 3.00)

Correct Answer
verified

Complete and balance the following redox reaction under basic conditions: PO₃^3-(aq)+ MnO₄^-(aq) $\to$ PO₄^3-(aq)+ MnO₂(s)

Correct Answer
verified
3PO₃^3-(a...
View Answer

Many different ways have been proposed to make batteries.One cell is set up with copper and lead electrodes in contact with CuSO₄(aq)and Pb(NO₃)₂ (aq), respectively.If the Pb²⁺ and Cu²⁺concentrations are each 1.0 M, what is the overall cell potential?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Exam 19: Electrochemistry

Which element is associated with the term "galvanized"?

Correct AnswerverifiedShow Answer

Find the emf of the cell described by the cell diagram Fe | Fe2+ (1.500M) || Au3+ (0.00400M) | Au

Correct AnswerverifiedShow Answer

In the following half equation, which is the oxidizing agent? NO3-(aq) + 4H+(aq) + 3e- →\to→ NO(g) + 2H2O

Correct AnswerverifiedShow Answer

Consider the reaction Fe + Sn2+(1 ×\times× 10-3 M) →\to→ Fe2+(1.0 M)+ Sn. Sketch a diagram of such a cell. Be sure to label the anode and cathode, and show the direction of electron flow in the external circuit. Write the half-reactions occurring at the electrodes.

Correct AnswerverifiedFe | Fe2+(1.0 M)|| ...View AnswerShow Answer

Which statement is true for a spontaneous redox reaction carried out at standard-state conditions?

Correct AnswerverifiedShow Answer

Iron objects such as storage tanks and underground pipelines can be protected from corrosion by connecting them through a wire to a piece of

Correct AnswerverifiedShow Answer

Which of these metals will be oxidized in hydrochloric acid under standard conditions at 25°C?

Correct AnswerverifiedShow Answer

Complete and balance the following redox equation using the set of smallest whole-numbers coefficients. What is the sum of the coefficients? HI + HNO3 →\to→ I2 + NO (acidic solution)

Correct AnswerverifiedShow Answer

Aluminum metal is formed by the electrolysis of Al2O3 in molten cryolite. How many minutes are required to form 10.0 g of Al using a current of 30 A?

Correct AnswerverifiedShow Answer

Consider the reaction 2Fe3+(aq) + Fe(s) 3Fe2+(aq) . Find the equilibrium constant for this reaction at 25°C.

Correct AnswerverifiedShow Answer

Will H2(g)form when Ag is placed in 1.0 M HCl?

Correct AnswerverifiedShow Answer

Which of these metals will not reduce water to hydrogen in basic solution under standard conditions?

Correct AnswerverifiedShow Answer

Aluminum metal is formed by the electrolysis of Al2O3 in molten cryolite. How many grams of Al are produced when 6.50 ×\times× 103 C pass through the cell?

Correct AnswerverifiedShow Answer

Calculate the cell emf for the following reaction: Cu2+(0.10 M) + H2(1 atm) →\to→ Cu(s) + 2H+(pH = 3.00)

Correct AnswerverifiedShow Answer

Complete and balance the following redox reaction under basic conditions: PO33-(aq)+ MnO4-(aq) →\to→ PO43-(aq)+ MnO2(s)

Correct Answerverified3PO33-(a...View AnswerShow Answer

Many different ways have been proposed to make batteries.One cell is set up with copper and lead electrodes in contact with CuSO4(aq)and Pb(NO3)2 (aq), respectively.If the Pb2+ and Cu2+ concentrations are each 1.0 M, what is the overall cell potential?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Consider the reaction Hg2+(aq) + Hg(l) Hg22+(aq) . Find the equilibrium constant for this reaction at 25°C.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Find the emf of the cell described by the cell diagram Fe | Fe²⁺ (1.500M) || Au³⁺ (0.00400M) | Au

Correct Answer
verified

In the following half equation, which is the oxidizing agent? NO₃^-(aq) + 4H⁺(aq) + 3e^- $\to$ NO(g) + 2H₂O

Correct Answer
verified

Consider the reaction Fe + Sn²⁺(1 $\times$ 10^-3 M) $\to$ Fe²⁺(1.0 M)+ Sn. Sketch a diagram of such a cell. Be sure to label the anode and cathode, and show the direction of electron flow in the external circuit. Write the half-reactions occurring at the electrodes.

Correct Answer
verified
Fe | Fe²⁺(1.0 M)|| ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Complete and balance the following redox equation using the set of smallest whole-numbers coefficients. What is the sum of the coefficients? HI + HNO₃ $\to$ I₂ + NO (acidic solution)

Correct Answer
verified

Aluminum metal is formed by the electrolysis of Al₂O₃in molten cryolite. How many minutes are required to form 10.0 g of Al using a current of 30 A?

Correct Answer
verified

Correct Answer
verified

Will H₂(g)form when Ag is placed in 1.0 M HCl?

Correct Answer
verified

Correct Answer
verified

Aluminum metal is formed by the electrolysis of Al₂O₃in molten cryolite. How many grams of Al are produced when 6.50 $\times$ 10³ C pass through the cell?

Correct Answer
verified

Calculate the cell emf for the following reaction: Cu²⁺(0.10 M) + H₂(1 atm) $\to$ Cu(s) + 2H⁺(pH = 3.00)

Correct Answer
verified

Complete and balance the following redox reaction under basic conditions: PO₃^3-(aq)+ MnO₄^-(aq) $\to$ PO₄^3-(aq)+ MnO₂(s)

Correct Answer
verified
3PO₃^3-(a...
View Answer

Many different ways have been proposed to make batteries.One cell is set up with copper and lead electrodes in contact with CuSO₄(aq)and Pb(NO₃)₂ (aq), respectively.If the Pb²⁺ and Cu²⁺concentrations are each 1.0 M, what is the overall cell potential?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified